i2pd/libi2pd/CPU.cpp

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/*
* Copyright (c) 2013-2020, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/
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#include "CPU.h"
#if defined(__x86_64__) || defined(__i386__)
#include <cpuid.h>
#endif
#include "Log.h"
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#ifndef bit_AES
#define bit_AES (1 << 25)
#endif
#ifndef bit_AVX
#define bit_AVX (1 << 28)
#endif
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namespace i2p
{
namespace cpu
{
bool aesni = false;
bool avx = false;
void Detect(bool AesSwitch, bool AvxSwitch, bool force)
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{
#if defined(__x86_64__) || defined(__i386__)
int info[4];
__cpuid(0, info[0], info[1], info[2], info[3]);
if (info[0] >= 0x00000001) {
__cpuid(0x00000001, info[0], info[1], info[2], info[3]);
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#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
if (AesSwitch && force) { // only if forced
#else
if ((info[2] & bit_AES && AesSwitch) || (AesSwitch && force)) {
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#endif
aesni = true;
}
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#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
if (AvxSwitch && force) { // only if forced
#else
if ((info[2] & bit_AVX && AvxSwitch) || (AvxSwitch && force)) {
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#endif
avx = true;
}
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}
#endif // defined(__x86_64__) || defined(__i386__)
LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
LogPrint(eLogInfo, "AVX ", (avx ? "enabled" : "disabled"));
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}
}
}